What is an ephemeral stream?
What will be an ideal response?
An ephemeral stream (or wadi, arroyo, donga, or nullah) is dry most of the time. It carries water only seasonally, in response to specific episodes of rainfall, for only a short period of time.
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The size of a stream channel depends on the
A. stream velocity. B. stream channel's load. C. gradient of the stream. D. All of the above
Why were the ideas regarding continental drift not readily accepted by scientists in the early 20th century?
A. They recognized that vertical forces explain Earth's geology. B. There was no proposed mechanism to cause such a drift. C. The continents did not fit exactly as if they had split.
The weight of all the air around Earth is a staggering 2000 trillion tons, or about 2 x 1018 kg
a. True b. False
Which of the following is defined as: a person who has a "well-founded fear of being persecuted for reasons of race, religion, nationality,membership of a particular social group or political opinion,
[who] is outside the country of his nationality and is unable or, owing to such fear, is unwilling to avail himself of the protection of that country"? A) an economic immigrant B) a political immigrant C) a refugee D) opportunistic migrants E) transient migrants